| Tail Number / N-Number | N79521 |
| Manufacturer | BOEING |
| Model | 737-824 |
| Year Built | 2010 |
| Manufacturer's Serial Number | 31662 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 149 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | CFM INTL |
| Engine Model | CFM56-7B26/3 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 25,900 pounds-force (115.2 kN) |
| Total Thrust | 51,800 pounds-force (230.4 kN) |
| Type of Registrant | Corporation |
| Owner Name | UNITED AIRLINES INC |
| Street | ATTN TREASURER WILLIS TOWER 233 SOUTH WACKER DRIVE |
| City | CHICAGO |
| State | IL |
| Zip Code | 60606 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2010-08-13 |
| Certificate Issue Date | 2010-08-16 |
| Last Action Date | 2020-12-18 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 52546520 |
| Mode S Code Hex | AACD50 |